Hand-generator



K. K. KRAG-MO'LLER.

HAND GENERATOR. APPLICATION FILED JUNE 5.1918.

1,333,119. Patented Mar. 9,1920.

man msTIAN'me-munn, orxrnnnnmxsnnne, DENMARK.

' HAND-GENERATOR.

Specicatioof Letters Patent.

Patented Mar.9,192o.

Application med-June 5, 191s. serial No. 238,354.

l To all whom z't may concern.'

'Be lit known that I, KARL KR1sTIAN. KRAG-MLLER, of Frederiksberg, inthe- Kingdom of Denmark,have invented certain new and usefulImprovements in orl Relating to Hand-Generators, of which the followingis a specification.

The present invention relates to an electromechanical pocket-lamp drivenby hand and consists of a suitably constructed and shaped generator ofalternating current, which in connection with an also es eciallyconstructed hand-motor has the e ect that the light is produced with aquite smallv consumption of power and that the whole apparatus may have'a fiat, substantially cylindrical shape,

-making it especially adapted to be disposed and kept in pockets,pouches and the liket A device embodying my invention is illus trated inthe drawing.

Figure 1 shows a side-view ofthe device embodying my invention, theside-wall being removed.

Fig. 2 shows an axial cross-section through the said device. Fig 3 showsa side-view of'the'said device.

The cylindrical part. of the saiddevice consists of a ring 1 provided atone side with a nunber of radial extensions 2, the ends of which haveshoes 3, the said shoes being concentrical with the ring 1. Within thesaid ring 1 is arranged a projection which supports anotherring 4.havingradial extensions 5, which at the ends are provided with shoes 6,the`latter being concentricalv with the outer ring. The shoes 6penetrate into spaces between the shoes 3 and form together with thelatter an inward cylindrical surface, without the shoes 3 and 6 touchingeach other. The. inward extensions or Iinwardly extending members 2 and5 with their terminal 'pole face providing shoes 3 Vand 6 support thewinding, and hold it in place.

The rings 1 and 4, the extens1ons 2 and 5 and the shoes 3 and 6 formtogether an annular chamber, which is filled by an annular wire-spool 7,and all the said parts form an electromagnetic system, so that, when anelectric current passes through the spool 7, magnetic poles withcontrary magnetism will be developed in the shoes 3 and 6.

In the center of the ring 1 is arranged a 1 shaft 8, one end of which isfastened in a cover 16, while the other end carries a'nut *On the shaft8 is arranged a revolvin claw foot member, members being disposedalternately in a 9 which serves to keep a cover 17 in place. box 10,carrying two contiguous steel dis s of which one is provided with arms1l having shoes 12 in the ends, while the other is rovided with arms 13the ends of which ave shoes 14. These artsform together va l permanentmagnet .with the shoes 12 and 14 as opposite poles.

The said two disks withy their arms and shoes, aforesaid constitute asleeve, 'which has at each end a the projections of said cylindricalsurface and constituting alternate north and south poles.

The shoes 12 and 14, without touching each other, form a cylindricalsurface, which is located concentri'cally within the cylinder formedbythe magnetic poles 3 and 6 and will when rotating' produce an electriccurrent in the winding 7. The magnetic poles 3 and 6 together with theextensions 2 and 5 are provided with incisions 15 Fig. l-to preventinjurious currents.

The permanent magnetic poles 12 and 14 are rotatedby means of ahand-motor arranged in the ring, the said hand-motor consisting of anarm 18, the latter beirg essentially formed as an oblique triangle,revolving around a journal 19 in the cover 17 and passing outside thering 1, the said arm being here provided with a presser-shoe 20 and ahook 21. which in the closed position is retained by a hook or ring 22.

In. the triangle is arranged around the"I pivot 19 as with a pinion 24,which, by means of apawl and pawl-wheel or similar arrangementsnotwheels 26 and 27, makes the box 10 rotate,

the saidI box 10 being provided with a pinion 28 and .carrying thepermanent magnets. The triangles 18 is returned to its extreme positionby means At the outside of the cylinder 1 is arranged an electric lamp30 and behind the latter is found a projection 31.

The device embodying my invention is carried in the position shown in-Fig. 3 with the thumb around the projection 31 and the fore-fingeraround the presser-shoe 20. 'By approaching the said two fingers to eachother the presser-shoe 20 is pushed inward, and the rack 23 will thenthrough the wheel work make the permanent magnets 12 and 14 of a spring29.-

center a rackh23, which engages l rotate swiftly, whereby an electriccurrent is generated in the winding 7 and as the circuit is closedthrough the lamp 30, the latter will bemade to shine.

When the ingers'again are removed the spring 29 leads the triangle 18togetherywith the presser-shoe 20 back to its extreme position, whilethemagnets'by means of a gearing between the pinion 24 and the cog-wheel 25will continue to rotate and to generate current for the use of the lamp.Q

The gearing of the wheel work and the bulk of the permanent magnets areadjusted in such a manner that a steady and strong light may be producedby a suitable number of pressures-v-for instance-one or two pressures inthe second.

If a steady light is to be produced by a considerably lesser number ofpressures, or if the lamp is only to shine a lcertain time after themotive power has ceased, a spring possessing a suitable accumulativepower is inserted between the pressen-shoe '20 and the rotating box 10.y p

It is not necessary that the ring- 1 shall haveperfectly cylindricshape, it can also be four or many' sided; nor is' it necessary that thering be constructed exactly as shown on ring 4 can for instance be madein one piece with the ring 1 or with the part around the machinery. p

An especial advantage by the invention consists therein thatthe spring29 together with the wheels 24, 25, 26 and27 are arranged on pivotswhich are fastened on the lateral cover 17, which is kept in its placeby means of a nut 9 on the end of the shaft 8, the latter being fastenedto the opposite vcover 16. en the nut 9 is removed, the

' cover 17 and the whole machinery can be taken out and insertedcollectively.

Having now particularly described and ascertained the nature of my saidinvention I declare that what I claim is:

1. In a generator, the combination of a rotatable magnet comprisingalternate north and south poles placed in a cylindrical surface, handoperated means for giving an 1mpulse to the magnet, spring-operatedmeans for returning said means to its 'initial posi'- tion, an annulargenerating winding and a flat casing inclosing said winding and saidmagnet, said casing comprising a ring of magnetic material provided withspaced inwardly projecting members terminating -in pole faces disposedin a cylindrical surface, said pole faces forming with the projectingmembers supports for the generating winding.

1an annular gener ating of the -ring which forms the edge which consistsl 'each other and collectively comprising a 2. In a generator, the'combination of a permanent magnet which consists of a sleeve mounted ona shaft, a claw foot member mounted on each end ofthe sleeve,'theprojections of said members being disposed alternatelyin a cylindricalsurface and consti'- tuting alternate north and south' poles, handoperated means for rotating said magnet, a casing supporting andinclosing said magnet and comprising a ring provided vwith spacedinwardly extending lmembers terminating in faces disposed in acylindrical lsurface coaxial with said magnet. l

3. In a generator, the combination of a rotatable magnet comprisingalternate poles of opposite polarity placed in a cylindrical suryface,hand operated means for giving an im-- pulse to the magnet, mechanicalmeans for returning said means to its initial position, winding, and aflat casing' inclosing said winding and said magnet, said casingcomprising a ring of magnetic material provided with inwardly projectingmembers terminating in pole faces arranged in a cylindrical surface, thesaid members supporting said winding.

4. In a generator, the combination of a rotatable magnet comprisingalternate north and south poles placed in a cylindrical surface, handoperated means for giving an impulse to said. magnet, an annulargenerating winding and a flat casing inclosing said winding and saidmagnet, said casing comprisingl a ring of magnetic material providedwith spaced inwardly projectingmembers 95 terminating in pole facesdisposed in a cylindrical surface, said pole faces forming with theprojecting members supports for the generating winding. I v

5. In` va generator a permanent magnet of two` parts in contact withsleeve mounted on a shaft each of said parts being provided with aclaw-foot member, the projections of said members being disposed' 105 ina cylindrical surface and constituting alternate north and south poles,in combination with hand operated means for rotating said magnet and acasing supporting and inclosing said magnet and provided with spacedinwardly extending members terminating in pole faces disposed in acylindricalv surface coaxial with said magnet.

In testimony whereof, I have signed my name to this kspecification inthe presence of two subscribing witnesses.

KARL KRISTIAN Kme-MLLER.

Witnesses:

JACQUES JENSEN, AGNES HERDAM.

